It is a singer's greatest nightmare: when the spotlight is on her and she loses her voice. And that was exactly what happened to American songstress Demi Lovato when she turned up at the iHeartRadio Theatre in New York last Saturday. The venue was hosting a party to celebrate the launch of her new album. Her voice cracked early in her rendition of her 2015 song Stone Cold. While she panicked and told the crowd "I don't know what to do", she did recover her poise to finish the number. Her new album Tell Me You Love Me debuted at No. 3 on the Billboard chart.